391052 has 12 divisors (see below), whose sum is σ = 696360. Its totient is φ = 192096.

The previous prime is 391049. The next prime is 391057. The reversal of 391052 is 250193.

It is not an unprimeable number, because it can be changed into a prime (391057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (58030).

2³⁹¹⁰⁵² is an apocalyptic number.

It is an amenable number.

391052 is a deficient number, since it is larger than the sum of its proper divisors (305308).

391052 is a wasteful number, since it uses less digits than its factorization.

391052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 391052 is about 625.3415066985. The cubic root of 391052 is about 73.1270696081.

It can be divided in two parts, 39105 and 2, that multiplied together give a triangular number (78210 = T₃₉₅).

The spelling of 391052 in words is "three hundred ninety-one thousand, fifty-two".